Tripathy D N, Hanson L E
Avian Dis. 1978 Apr-Jun;22(2):259-65.
Egg production dropped after hens were inoculated with fowlpox virus originally isolated from a natural mild infection. The drop started from the 2nd week and continued to the 5th week after inoculation. All birds developed focal lesions at the site of inoculation, and some developed secondary lesions. The drop in individual birds was related to the severity of lesions. Birds challenged with fowlpox virus fifteen months after vaccination with pigeon pox vaccine were susceptible.
用最初从自然轻度感染中分离出的禽痘病毒接种母鸡后，产蛋量下降。产蛋量下降从接种后的第2周开始，持续到第5周。所有鸡在接种部位都出现了局部病变，有些还出现了继发性病变。个体鸡的产蛋量下降与病变的严重程度有关。用鸽痘疫苗接种15个月后再用禽痘病毒攻击的鸡很容易感染。
